Open up a new window with param "newwins=yes" and window name "subWindow"

<SCRIPT LANGUAGE="JavaScript">
var myWind = ""
function doNew() {
if (myWind == "" || myWind.closed || myWind.name == undefined) {
myWind = window.open("/collateral/index.html?newwins=yes","subWindow","HEIGHT=200,WIDTH=450,resizable=yes,scrollbars=yes")
//alert("Mywindow.name="+myWind.name);
} else{
myWind.focus();
}
}

</SCRIPT>

<input type="button" name="storage" value="Collateral search" onClick="doNew()">